By around 2006 Stonewall had completely achieved its aims. Civil partnerships meant that lesbians and gay men had the same right to legalise their relationships and secure their homes and pensions for their partners, avoid IHT and so on. That same tranche of legislation gave LGB people equal rights in a number of other ways: the right not to be discriminated against when it came to goods and services, for example. Straight people may not be aware of all the little slights that we endured prior to this. I still have, somewhere, a photograph, C2007, of a bar in Cardiff that had signs up in its windows asking lesbian and gay couples to desist from using the place. The Equality Act 2010 cemented our rights.
So Stonewall's work was done and they had the choice of disbanding, becoming a much smaller organisation or finding a new cause in order to keep everyone employed and their name current. They'd been flirting with the trans community since the early 2000s. I know a woman who chaired a Stonewall committee for some years and brought a non-binary person and then a trans woman onto the committee to test the water in around 2006. Most of the lesbians resigned in protest, arguing that sex and gender were two different things and people couldn't change sex.
Stonewall's story is a tragic one. Heroic upholder of LGB rights to oppressor of the people they fought for. I want Michael Cashman and Ruth Hunt held to account for the terrible damage they've done to the gay community. I regard Nancy Kelley as just a useful idiot brought in to place-hold through the chaos. Hunt's the one who manacled the T to the LGB.